This product comes with no guarantee that the metal ring/teeth will not break similar to what may be the reason you are seeking a replacement.
This part is for use with the extruders linked directly below:
- Extruder / Feed Mechanism for MP Select Mini V1, V2, Pro/V3 & MP Mini Delta
- Extruder - Feed Mechanism for MP10 and MP10 Mini
Compatible with:
- Monoprice MP Select Mini V2 - Check the product pictures to see if it matches what is on your printer
- Monoprice MP Select Mini Pro/V3
- Monoprice MP Mini Delta - Check the product pictures to see if it matches what is on your printer
This part is NOT for use with the extruders linked directly below (the extruders look the same but the subtle difference is the connector type):
- Extruder / Feed Mechanism for MP Select Mini V1, V2, Pro/V3 & MP Mini Delta - Updated Right Hand
- Extruder - Feed Mechanism for MP10, MP10 Mini and Malyan M320 - Updated Left Hand
This model on Thingiverse is designed to keep the new extruder type but print an adapter to be able to use a standard PC4-M6 Bowden connector instead of the new style that seem prone to breaking.
https://www.thingiverse.com/thing:2793080
Here are some printable replacement extruders/feeder mechanisms on Thingiverse - Thingiverse Collection of Extruders for the Mini Delta and Select Mini